Molly Higgins and Rachel Keiko Stark write: “Without understanding how bias operates in the systems in which we work, our individual efforts can be overtaken by how bias acts on librarians and library patrons. For example, the Dewey Decimal Classification has been criticized for reinforcing bias through its structure, its treatment of queer subjects, and its treatment of race. Like other knowledge-organization systems, the Dewey Decimal Classification reflects the biases of the people who created it.”